Using the same time series data and trend forecast model as in exercise 13, respond to the
Question:
Using the same time series data and trend forecast model as in exercise 13, respond to the following items.
a. Plot the residuals associated with the trend model for this data.
b. T est for autocorrelation using the .05 significance level.
c. R eport and interpret your result.
Transcribed Image Text:
Period Sales Period Sales 1 $1001 10 $686 2 1129 11 909 3 841 12 469 4 1044 13 566 1012 14 488 703 15 688 7 682 16 675 8 712 17 303 9 646 18 381
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a The graph of residuals does not show evidence of a pattern or autocorrelation b c The dtest s...View the full answer
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Related Book For
Statistical Techniques In Business And Economics
ISBN: 9781260239478
18th Edition
Authors: Douglas Lind, William Marchal, Samuel Wathen
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